Hi quick question, i just finished 12 hours of rehearsals that was over 2 days though, i am not hoarse at all! which is great as i was sining high male C and even past D sometimes, but i have a bit of chest pain ? am i running the risk of developing nodes at all? i just thought as im not going hoarse i am speaking fine, maybe i have just over done it a tad? again throat is fine just chest really, feels a little like after a run you get that senastion in your chest and in between collar bones. I just feel after a long time i have finaly cracked it as i can still sing, anyway what does this mean? i have heard it could be heart burn ? hopefully someone can help me on this thanks!